package org.mybatis.generator.api.plus;

import org.mybatis.generator.api.IntrospectedColumn;
import org.mybatis.generator.api.IntrospectedTable;
import org.mybatis.generator.api.dom.java.TopLevelClass;

import java.io.*;
import java.util.Iterator;
import java.util.List;

/**
 * @author wangfupeng
 */
public class MybatisUtilBatchService {

    public static void writeBatchService(String basePackageName, String aspectPackageName, String targetProject, TopLevelClass topLevelClass, IntrospectedTable introspectedTable, String tableName, String servicePackage, String mapperPackage, String modelPackage) {
        File file = null;
        OutputStream fileOutputStream = null;
        BufferedWriter bufferedWriter = null;
        try {
            String packageNameFolder = servicePackage.replaceAll("\\.", "/");
            targetProject = targetProject.replaceAll("\\./", "");
            File folder = new File(targetProject + "/" + packageNameFolder + "/batch");
            folder.mkdirs();
            file = new File(targetProject + "/" + packageNameFolder + "/batch/Batch" + tableName + "Service.java");
            //如果文件不存在，则创建文件，如果已存在，则覆盖
            file.createNewFile();
            fileOutputStream = new FileOutputStream(file);
            bufferedWriter = new BufferedWriter(new OutputStreamWriter(fileOutputStream, "utf-8"));
            bufferedWriter.write("package " + servicePackage + ".batch;\n");
            bufferedWriter.write("" +
                    "import " + mapperPackage+".batch.Batch" + tableName + "Mapper;\n" +
                    "import " + modelPackage +"."+ tableName + ";\n" +
                    "import com.gitee.fufu669.aspect.CacheMockFetchLater;\n" +
                    "import org.springframework.beans.factory.annotation.Autowired;\n" +
                    "import org.springframework.stereotype.Service;\n" +
                    "import org.springframework.context.annotation.Lazy;\n" +
                    "\n" +
                    "import java.util.List;\n" +
                    "\n" +
                    "/*" + introspectedTable.getRemarks() + "的集体插入服务*/\n" +
                    "@Lazy\n" +
                    "@Service\n" +
                    "public class Batch" + tableName + "Service {\n" +
                    "    \n" +
                    "    @Autowired\n" +
                    "    Batch" + tableName + "Mapper batch" + tableName + "Mapper;\n" +
                    "    \n");
            bufferedWriter.write("" +
                    "    public Integer batchAdd(List<" + tableName + "> " + MybatisUtilCommon.toLowerCaseAtFirstCharacter(tableName) + "s){\n");
            List<IntrospectedColumn> introspectedColumns2 = introspectedTable.getAllColumns();
            Iterator<IntrospectedColumn> iterator2 = introspectedColumns2.iterator();
            bufferedWriter.write("        //批量插入\n");
            bufferedWriter.write("        return batch" + tableName + "Mapper.batchAdd(" + MybatisUtilCommon.toLowerCaseAtFirstCharacter(tableName) + "s);\n    }\n");
            bufferedWriter.write("}");
            bufferedWriter.write("\n");
            System.out.println("write to file success : " + file.getPath());
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            MybatisUtilCommon.closeBufferWriterAndFileOutputStream(fileOutputStream, bufferedWriter);
        }
    }

}
